Singleness or Doubleness of the Chromosomes in the Successive Stages of Mitosis
1938 Volume 9 Issue 2-3 Pages 319-333
Details
1938 Volume 9 Issue 2-3 Pages 319-333
1. A study of chromosome behaviour at mitosis in the Egyptian variety of Cucumis sativus is described.
2. The number of chromosomes is 2n=14.
3. The chromosomes were observed to be double in structure at prophase and metaphase.
4. The chromosomes were single in structure at anaphase and telo-phase.
5. Evidence from meiosis, from the effect of X-radiation on somatic chromosomes in other plants, and from the present investigation is conclusive in supporting the view that the effective splitting of the chromosomes takes place during the resting stage.
6. The behaviour of the nucleoli in relation to other plants is discussed.
